101 lines
3.1 KiB
Go
101 lines
3.1 KiB
Go
// Copyright 2015 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build !nostat
|
|
|
|
package collector
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/go-kit/log"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/procfs"
|
|
)
|
|
|
|
type statCollector struct {
|
|
fs procfs.FS
|
|
intr *prometheus.Desc
|
|
ctxt *prometheus.Desc
|
|
forks *prometheus.Desc
|
|
btime *prometheus.Desc
|
|
procsRunning *prometheus.Desc
|
|
procsBlocked *prometheus.Desc
|
|
logger log.Logger
|
|
}
|
|
|
|
func init() {
|
|
registerCollector("stat", defaultEnabled, NewStatCollector)
|
|
}
|
|
|
|
// NewStatCollector returns a new Collector exposing kernel/system statistics.
|
|
func NewStatCollector(logger log.Logger) (Collector, error) {
|
|
fs, err := procfs.NewFS(*procPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open procfs: %w", err)
|
|
}
|
|
return &statCollector{
|
|
fs: fs,
|
|
intr: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "", "intr_total"),
|
|
"Total number of interrupts serviced.",
|
|
nil, nil,
|
|
),
|
|
ctxt: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "", "context_switches_total"),
|
|
"Total number of context switches.",
|
|
nil, nil,
|
|
),
|
|
forks: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "", "forks_total"),
|
|
"Total number of forks.",
|
|
nil, nil,
|
|
),
|
|
btime: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "", "boot_time_seconds"),
|
|
"Node boot time, in unixtime.",
|
|
nil, nil,
|
|
),
|
|
procsRunning: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "", "procs_running"),
|
|
"Number of processes in runnable state.",
|
|
nil, nil,
|
|
),
|
|
procsBlocked: prometheus.NewDesc(
|
|
prometheus.BuildFQName(namespace, "", "procs_blocked"),
|
|
"Number of processes blocked waiting for I/O to complete.",
|
|
nil, nil,
|
|
),
|
|
logger: logger,
|
|
}, nil
|
|
}
|
|
|
|
// Update implements Collector and exposes kernel and system statistics.
|
|
func (c *statCollector) Update(ch chan<- prometheus.Metric) error {
|
|
stats, err := c.fs.Stat()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
ch <- prometheus.MustNewConstMetric(c.intr, prometheus.CounterValue, float64(stats.IRQTotal))
|
|
ch <- prometheus.MustNewConstMetric(c.ctxt, prometheus.CounterValue, float64(stats.ContextSwitches))
|
|
ch <- prometheus.MustNewConstMetric(c.forks, prometheus.CounterValue, float64(stats.ProcessCreated))
|
|
|
|
ch <- prometheus.MustNewConstMetric(c.btime, prometheus.GaugeValue, float64(stats.BootTime))
|
|
|
|
ch <- prometheus.MustNewConstMetric(c.procsRunning, prometheus.GaugeValue, float64(stats.ProcessesRunning))
|
|
ch <- prometheus.MustNewConstMetric(c.procsBlocked, prometheus.GaugeValue, float64(stats.ProcessesBlocked))
|
|
|
|
return nil
|
|
}
|